+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-11985 | |||||||||
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Title | TRPC4 in complex with Calmodulin | |||||||||
Map data | ||||||||||
Sample |
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Function / homology | Function and homology information CaMK IV-mediated phosphorylation of CREB / Cam-PDE 1 activation / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Glycogen breakdown (glycogenolysis) / Activation of RAC1 downstream of NMDARs / Reduction of cytosolic Ca++ levels / Sodium/Calcium exchangers / Activation of Ca-permeable Kainate Receptor / CLEC7A (Dectin-1) induces NFAT activation / Synthesis of IP3 and IP4 in the cytosol ...CaMK IV-mediated phosphorylation of CREB / Cam-PDE 1 activation / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Glycogen breakdown (glycogenolysis) / Activation of RAC1 downstream of NMDARs / Reduction of cytosolic Ca++ levels / Sodium/Calcium exchangers / Activation of Ca-permeable Kainate Receptor / CLEC7A (Dectin-1) induces NFAT activation / Synthesis of IP3 and IP4 in the cytosol / RHO GTPases activate PAKs / Calmodulin induced events / Inactivation, recovery and regulation of the phototransduction cascade / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / Calcineurin activates NFAT / eNOS activation / Ion transport by P-type ATPases / Unblocking of NMDA receptors, glutamate binding and activation / Protein methylation / RAF activation / VEGFR2 mediated vascular permeability / RAS processing / Smooth Muscle Contraction / Ca2+ pathway / FCERI mediated Ca+2 mobilization / RAF/MAP kinase cascade / RHO GTPases activate IQGAPs / Extra-nuclear estrogen signaling / store-operated calcium channel activity / PKA activation / Platelet degranulation / cation channel complex / Stimuli-sensing channels / Ion homeostasis / type 3 metabotropic glutamate receptor binding / inositol 1,4,5 trisphosphate binding / organelle localization by membrane tethering / regulation of cardiac muscle cell action potential / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / nitric-oxide synthase binding / protein phosphatase activator activity / monoatomic cation transport / adenylate cyclase binding / catalytic complex / detection of calcium ion / negative regulation of ryanodine-sensitive calcium-release channel activity / regulation of cardiac muscle contraction / calcium channel inhibitor activity / cellular response to interferon-beta / voltage-gated potassium channel complex / phosphatidylinositol 3-kinase binding / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / monoatomic cation channel activity / positive regulation of protein dephosphorylation / titin binding / regulation of ryanodine-sensitive calcium-release channel activity / sperm midpiece / calcium channel complex / regulation of cytosolic calcium ion concentration / adenylate cyclase activator activity / regulation of heart rate / nitric-oxide synthase regulator activity / protein serine/threonine kinase activator activity / sarcomere / regulation of cytokinesis / spindle microtubule / calcium ion transmembrane transport / positive regulation of receptor signaling pathway via JAK-STAT / spindle pole / cellular response to type II interferon / response to calcium ion / calcium-dependent protein binding / G2/M transition of mitotic cell cycle / myelin sheath / growth cone / transmembrane transporter binding / protein domain specific binding / centrosome / calcium ion binding / protein kinase binding / protein-containing complex / nucleoplasm / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||
Biological species | Danio rerio (zebrafish) / Mus musculus (house mouse) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.6 Å | |||||||||
Authors | Vinayagam D / Quentin D / Sistel O / Merino F / Stabrin M / Hofnagel O / Ledeboer MW / Malojcic G / Raunser S | |||||||||
Funding support | Germany, 1 items
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Citation | Journal: Elife / Year: 2020 Title: Structural basis of TRPC4 regulation by calmodulin and pharmacological agents. Authors: Deivanayagabarathy Vinayagam / Dennis Quentin / Jing Yu-Strzelczyk / Oleg Sitsel / Felipe Merino / Markus Stabrin / Oliver Hofnagel / Maolin Yu / Mark W Ledeboer / Georg Nagel / Goran ...Authors: Deivanayagabarathy Vinayagam / Dennis Quentin / Jing Yu-Strzelczyk / Oleg Sitsel / Felipe Merino / Markus Stabrin / Oliver Hofnagel / Maolin Yu / Mark W Ledeboer / Georg Nagel / Goran Malojcic / Stefan Raunser / Abstract: Canonical transient receptor potential channels (TRPC) are involved in receptor-operated and/or store-operated Ca signaling. Inhibition of TRPCs by small molecules was shown to be promising in ...Canonical transient receptor potential channels (TRPC) are involved in receptor-operated and/or store-operated Ca signaling. Inhibition of TRPCs by small molecules was shown to be promising in treating renal diseases. In cells, the channels are regulated by calmodulin (CaM). Molecular details of both CaM and drug binding have remained elusive so far. Here, we report structures of TRPC4 in complex with three pyridazinone-based inhibitors and CaM. The structures reveal that all the inhibitors bind to the same cavity of the voltage-sensing-like domain and allow us to describe how structural changes from the ligand-binding site can be transmitted to the central ion-conducting pore of TRPC4. CaM binds to the rib helix of TRPC4, which results in the ordering of a previously disordered region, fixing the channel in its closed conformation. This represents a novel CaM-induced regulatory mechanism of canonical TRP channels. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_11985.map.gz | 10.1 MB | EMDB map data format | |
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Header (meta data) | emd-11985-v30.xml emd-11985.xml | 20.2 KB 20.2 KB | Display Display | EMDB header |
Images | emd_11985.png | 239.7 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-11985 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-11985 | HTTPS FTP |
-Related structure data
Related structure data | 7b1gMC 7b05C 7b0jC 7b0sC 7b16C C: citing same article (ref.) M: atomic model generated by this map |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_11985.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Voxel size | X=Y=Z: 0.85 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : TRPC4 membrane protein in complex with calmodulin
Entire | Name: TRPC4 membrane protein in complex with calmodulin |
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Components |
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-Supramolecule #1: TRPC4 membrane protein in complex with calmodulin
Supramolecule | Name: TRPC4 membrane protein in complex with calmodulin / type: organelle_or_cellular_component / ID: 1 / Parent: 0 / Macromolecule list: #1-#2 / Details: TRPC4 was solubilised in LMNG detergent |
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Molecular weight | Theoretical: 126 KDa |
-Supramolecule #2: Transient receptor potential cation channel subfamily c member 4a
Supramolecule | Name: Transient receptor potential cation channel subfamily c member 4a type: organelle_or_cellular_component / ID: 2 / Parent: 1 / Macromolecule list: #1 |
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Source (natural) | Organism: Danio rerio (zebrafish) / Location in cell: plasma membrane |
Recombinant expression | Organism: Homo sapiens (human) / Recombinant cell: HEK 293 GnTI- / Recombinant plasmid: pEG BACMAM |
-Supramolecule #3: Calmodulin-1
Supramolecule | Name: Calmodulin-1 / type: organelle_or_cellular_component / ID: 3 / Parent: 1 / Macromolecule list: #2 |
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Source (natural) | Organism: Mus musculus (house mouse) |
Recombinant expression | Organism: Escherichia coli BL21 (bacteria) |
-Macromolecule #1: Transient receptor potential cation channel subfamily c member 4a
Macromolecule | Name: Transient receptor potential cation channel subfamily c member 4a type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: Danio rerio (zebrafish) |
Molecular weight | Theoretical: 105.204641 KDa |
Recombinant expression | Organism: Homo sapiens (human) |
Sequence | String: GSQLYFRRTD NSSYRDRIPL RIVRAESELS TQEKSYLSAV EKGDYASVKL ALEEAEIYFK ININCIDPLG RTALLIAIEN ENLEIIELL LSFNVYVGDA LLHAIRKEVV GAVELLLNHK KPSGEKQVPP ILLDKQFSDF TPDITPIILA AHTNNYEIIK M LVQKGVSV ...String: GSQLYFRRTD NSSYRDRIPL RIVRAESELS TQEKSYLSAV EKGDYASVKL ALEEAEIYFK ININCIDPLG RTALLIAIEN ENLEIIELL LSFNVYVGDA LLHAIRKEVV GAVELLLNHK KPSGEKQVPP ILLDKQFSDF TPDITPIILA AHTNNYEIIK M LVQKGVSV PQPHEVRCNC VECVSSSDVD SLRHSRSRLN IYKALASPSL IALSSEDPFL TAFQLSWELQ ELSKVENEFK AE YEELSHQ CKHFAKDLLD QTRSSRELEL ILNFRDDMNL LQDEANNELA RLKLAIKYRQ KEFVAQPNCQ QLLASRWYDE FPG WRRRHW AGKLITCVFI GLMFPLLSLC YLVAPKSRYG LFIRKPFIKF ICHTASYLTF LFLLLLASQH IVSNNPDRQG PKPT TVEWM ILPWVLGFIW TEIKQMWDGG FQDYIHDWWN LMDFVMNSLY LATISLKIVA YVKYSGCKPR DTWEMWHPTL VAEAV FAIA NIFSSLRLIS LFTANSHLGP LQISLGRMLL DILKFLFIYC LVLLAFANGL NQLYFYYENS EGMTCKGIRC ERQNNA FST LFETLQSLFW SIFGLISLYV TNVKADHKFT EFVGATMFGT YNVISLVVLL NMLIAMMNNS YQHIADHADI EWKFART KL WMSYFEEGGT LPPPFNIIPS PKSICYLITW IKVHVFKRRS KRTETFGTLG RRAAENVRLN HQYQEVLRNL VKRYVAAM I RDAKTEEGLT EENFKELKQD ISSFRYEVIG MMKGNRKSTR ANKSDTSASD VSHPEGSLQY SSALKQNSKL HLYDVTTAL QQQNSEEAKA SLGCLANGSA VVLTEPILKD KARSDFPKDF TDFGLFPKKQ NPNKIYSLAE EATESDPDIL DWGKEDKPLA GKVEQDVNE SKCLMEEDER VLEEQEMEHI ASSHEH |
-Macromolecule #2: Calmodulin-1
Macromolecule | Name: Calmodulin-1 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO |
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Source (natural) | Organism: Mus musculus (house mouse) |
Molecular weight | Theoretical: 16.852545 KDa |
Recombinant expression | Organism: Escherichia coli BL21 (bacteria) |
Sequence | String: MADQLTEEQI AEFKEAFSLF DKDGDGTITT KELGTVMRSL GQNPTEAELQ DMINEVDADG NGTIDFPEFL TMMARKMKDT DSEEEIREA FRVFDKDGNG YISAAELRHV MTNLGEKLTD EEVDEMIREA DIDGDGQVNY EEFVQMMTAK |
-Macromolecule #3: CALCIUM ION
Macromolecule | Name: CALCIUM ION / type: ligand / ID: 3 / Number of copies: 4 / Formula: CA |
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Molecular weight | Theoretical: 40.078 Da |
-Macromolecule #4: (2R)-3-(phosphonooxy)propane-1,2-diyl dihexanoate
Macromolecule | Name: (2R)-3-(phosphonooxy)propane-1,2-diyl dihexanoate / type: ligand / ID: 4 / Number of copies: 4 / Formula: 44E |
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Molecular weight | Theoretical: 368.36 Da |
Chemical component information | ChemComp-44E: |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Concentration | 0.35 mg/mL | ||||||||||||
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Buffer | pH: 7.4 Component:
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Grid | Model: Quantifoil R2/1 / Material: COPPER / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR | ||||||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 95 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | C2 aperture diameter: 70.0 µm / Calibrated magnification: 59000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 0.001 mm / Nominal defocus max: 2.8 µm / Nominal defocus min: 1.5 µm / Nominal magnification: 130000 |
Specialist optics | Spherical aberration corrector: Cs corrector first generation Energy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Temperature | Min: 160.0 K / Max: 190.0 K |
Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Detector mode: COUNTING / Digitization - Dimensions - Width: 3838 pixel / Digitization - Dimensions - Height: 3710 pixel / Digitization - Sampling interval: 5.0 µm / Digitization - Frames/image: 1-80 / Number grids imaged: 1 / Number real images: 7972 / Average exposure time: 10.0 sec. / Average electron dose: 88.52 e/Å2 |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Particle selection | Number selected: 678331 |
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CTF correction | Software - Name: CTFFIND (ver. 4.1.10) |
Startup model | Type of model: EMDB MAP EMDB ID: |
Initial angle assignment | Type: NOT APPLICABLE / Details: Used EMD-4339 as a reference |
Final 3D classification | Number classes: 10 / Software - Name: SPHIRE (ver. 1.3) / Software - details: SORT3D Details: Symmetry expansion was used to quadruple the Particles. From the best classes after 3d classification duplicates were removed that resulted in 160829 particles |
Final angle assignment | Type: MAXIMUM LIKELIHOOD / Software - Name: SPHIRE / Software - details: MERIDIEN |
Final reconstruction | Number classes used: 4 / Applied symmetry - Point group: C1 (asymmetric) / Algorithm: FOURIER SPACE / Resolution.type: BY AUTHOR / Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: SPHIRE / Software - details: MERIDIEN / Number images used: 160829 |